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To the alchemists, gold was the material representation of purity. It is a very soft metal that can be hammered into extremely thin sheets. If a 1.54 g piece of gold is hammered into a sheet whose area is 34.4 ft2, what is the average thickness of the sheet? (The density of gold is 19.32 g cm-3.)
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K.
it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.338 mol of F2 is added to this equilibrium mixture, calculate the concentrations of all gases once equilibri..
Protein Quantification why is it more useful to plot absorbance vs. weight units(mg/ml) instead of absorbance vs. molar concentration?
How many kilograms of acetic acid needs to dissolve 94 grams of potassium chloride if the freezing point changed 19.6 degrees celcius?
a solution is prepared by dissolving 20.0 g of NaI in enoug water tomake 300.mL of solution How many moles of ions are in 25.mL of thesolution?
For the set of elements Li, O, Ne, and Na which element has the largest atomic radius? Explain any deviation from the expected pattern.
Dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
Provide the name of the major alkene product that results when (2S,3S)-2-bromo-3-methylpentane is treated with sodium methoxide in methanol.
prepare 250.00 mL of 0.150 M ammonium ion solution beginning with solid ammonium phosphate, (NH4)3 PO4.
Calculate the heat evolved when 306 g of white phosphorus (P4) burns in air according to the equation below.
what is the cell potential at 25 ?C if the concentrations are [Co3+]= 0.852M , [Co2+]= 0.545M , and [Cl?]= 0.313M and the pressure of Cl2 is PCl2= 6.10atm
A solution has a volume of 2.0 L and contains 36.0 g of glucose (C6H12O6). If the molar mass of glucose is 180 g/mol, what is the molarity of the solution.
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